Transactions of Materials and Heat Treatment

Title：Application of hydraulic stretcher in continuous extrusion machine TLJ400

Authors： Zhang Jing Fan Zhixin Sun Haiyang

Unit： Continuous Extrusion Engineering Research Center of Education Ministry Dalian Jiaotong University Dalian 116028 China

KeyWords： continuous extrusion machine hydraulic stretcher threaded connection static analysis FEM analysis

ClassificationCode：TG375

year,vol(issue):pagenumber：2019,44(5):105-109

Abstract：

For the shortcomings of hydraulic nuts in spindle system for continuous extrusion machine, such as safety risks and high production cost, the hydraulic nuts were replaced by ordinary mechanical nuts by hydraulic stretchers. Hydraulic stretcher, as a set of tools for assembling and disassembling spindle system, could make hydraulic components and sealing components no longer participate in continuous extrusion production, and reduced the impact of production environment. Therefore, the safety was improved when assembling and disassembling the spindle system, and the production costs were reduced. Furthermore, the force of the hydraulic stretcher piston and mandrel threaded screwing section was analyzed by ANSYS, and the influences of mechanical nuts with different shapes on the stress distribution in the screwing section were compared. The results show that it is more conducive to the uniform distribution of load in the thread screwing section by increasing the piston area to reduce the pressure or using universal hydraulic stretcher, and the grooved nut can effectively reduce the stress on the bottom of the first thread for mandrel.

Funds：

国家自然科学基金资助项目(51505056)

作者简介：张靖（1992-），女，硕士研究生 Email：jzhang2513@163.com 通讯作者：孙海洋（1977-），男，博士，讲师 Email：sky0391@aliyun.com

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